82370992021 has 2 divisors, whose sum is σ = 82370992022. Its totient is φ = 82370992020.

The previous prime is 82370992003. The next prime is 82370992037. The reversal of 82370992021 is 12029907328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75493607121 + 6877384900 = 274761^2 + 82930^2 .

It is a cyclic number.

It is not a de Polignac number, because 82370992021 - 2¹⁹ = 82370467733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82370992001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41185496010 + 41185496011.

It is an arithmetic number, because the mean of its divisors is an integer number (41185496011).

Almost surely, 2^82370992021 is an apocalyptic number.

It is an amenable number.

82370992021 is a deficient number, since it is larger than the sum of its proper divisors (1).

82370992021 is an equidigital number, since it uses as much as digits as its factorization.

82370992021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 82370992021 in words is "eighty-two billion, three hundred seventy million, nine hundred ninety-two thousand, twenty-one".